It circled the Earth in obscurity for more than half a year, now the X-37B OTV-5 space plane has been conclusively identified by amateur satellite observers in a circular orbit 356 Kilometers in altitude.

A SpaceX Falcon 9 blasted into partly cloudy skies over Cape Canaveral on Thursday, carrying into orbit the U.S. Air Force’s X-37B winged space plane on a mostly classified mission to test out new technologies in space and perform a range of experiments out of public view as part of the program’s fifth flight to space.